//
//  Truck.m
//  08_iOS9新特性(Nullabilty , 泛型, _Kindof)
//
//  Created by dllo on 16/7/13.
//  Copyright © 2016年 LST. All rights reserved.
//

#import "Truck.h"

@implementation Truck
- (void)addObject:(id)object {
    
}
- (id)anyObject {
    return nil;
}
- (__kindof NSArray *) returnArray {
    return @[];
    //return  [NSMutableArray array];
}

@end
